Paekee c



(No Model.)

P. G. MARSH. FEATHERING PADDLE WHEEL.

Patented Jan. 6, 1885.

L. .dttorney ihvirnn STATES PATENT OFFICE.

PARKER G. MARSH, OF TROY, NEXV YORK.

FEATHERING PADDLE-WHEEL.

SPECIFICATION forming part of Letters Patent No. 310,;51, dated January 6, 1885.

Application filed April 26, 1884. (No model.)

To all whom it may concern.-

Be it known that I, PARKER O. Miinsn, a citizen of the United States of America, residing at Troy, in the county of Bensselaer and State of N ew York, have invented certain new and useful Improvements in Propeller- ,Vheels; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, and to letters or figures of reference marked thereon, which form a part of this specification.

This invention relates to certain new and useful improvements in feathering paddlewheels, the object of my invention being to provide a wheel which may be rotated in either direction, and which will present the paddles to the water in avertical position; and to this end my invention consists in the construction and combination of parts, as will be hereinafter set forth.

In the accompanying drawings, Figure l is a vertical section. Fig. 2 is a sectional View taken through the line a: m of Fig. 1, and Fig. 3 is a detail side view.

A represents the side of the vessel,which is provided with bearings, through which the driving-shaft A passes, upon which drivingshaft is rigidly attached the paddlewheel B.

Upon a central hub, B, are rigidly secured the spokes and rim of the paddle-wheel, the inner spokes being provided with radial slots Z), within which operate suitable slides, which are connected to the paddles. The paddles O are concaved in cross-section, and are provided on their rear portions with projecting arms 0, having at their ends projecting portions, which pass through perforations in the rims of the wheel opposite the radial arms thereof.

Rigidly attached to the inner side of the paddles are short arms (I, the end d of these arms being of sufficient length to extend be yond the periphery of the inner end of the wheel,while the longer or opposite end, (1, of these arms is pivotally connected to a con necting-arm, e, which is attached to a sliding block, E, which is secured within the slotb in the radial arms.

Attached to the lower end of the arm 6, at

which are arranged as shown, so as to provide eccentric passages K K L L about the shaft-opening a, which passes through the up per part of the plate I-I.

Between and around the plates II I I J is the anti-friction rollers F, which are attached to the end of the arms 0.

J ournaled upon the upper and lower ends of the plates I I are weighted dogs M, which assume normally the position shown in Fig. 8, the weights of these dogs operating within suitable recesses formed in the frame A,while the outer portions operate on a line with the plates H I I J.

The operation of my invention will be fully understood by following the positions as sumed by the anti-friction rollers F in the guideways, and the positions assumed by the paddle, which is operated thereby. The paddle Z, when in the water, at the lowest portion of the wheel will be in a vertical position, the arm 6 being inclined from the radial slotted spokes, and the anti-friction roller will be located immediately under the ends of the weighted dogs M, and as the wheels are rotated this anti-friction roller will travel in a passage, K, between the guide-plates I J, when it will gradually be turned over, a complete rotation of the same being accomplished when it reaches apoint opposite the trippingarm G, which will throw the arms (I 0 off a dead-center, so as to prevent binding of the parts. \Vhen the anti-friction roller reaches a point opposite the shaft or center of the plate II, it will be guided by the weighted dog at tached to the upper portion of the plateI into the way L, and the anti-friction roller travela point opposite the sliding block E, are antia depressed passage-way for the reception of ing in this way will turn the paddle so that it will enter the water in a nearly vertical position, the anti-friction roller F passing out of the guide L into the passage K. When the paddle-wheel is reversed,the anti-friction roller will travel in the guide-passages K L, and will operate in a manner similar to that hereinbefore described. The dogs M, as shown, have spur-extensions m, which are nonnally maintained by the weighted portion of said dogs in the positions illustrated in Fig. 3 that is to say, the spurs 0f the upper dogs are so located as to close or partly close the upper end of the passages K K, while the spurs of the lower dogs are thrown with their free ends against the bottom of the plate H, thus closing the lower ends of the inner passages, L L. By this means the roller traveling upward in the passage K will act as a wedge on the spur-extension at,the top and move the same sufficiently to permit said roller to pass from passage K, but contacting with the concave side of the spur closing the passage K the said roller will be deflected into the inner passage, L, and will afterward move the spur, closing the lower end of said passageto again enter the passage K.

It will be readily seen from the foregoing that the paddles, as they enter the water,will not have atendency to lift the vessel, and will leave the water freely without an expenditure of power; also that there will be less waves caused than by paddlewheels of ordinary construction.

1. The combination, in a propeller-wheel, of a drive-shaft suitably journaled, a wheel provided with parallel rim-sections, andhaving its spokes slotted as described, a series of paddles having journals bearing in said rimsections, an arm, (I, connected to one of said journals of each paddle, an arm, a, connected to arm (I and to a block located in one of the spokeslots, devices for moving said block in said slot, and a trip device, G, for contacting with the end of the arm cl when the same is in line with the arm 0, substantially as set forth.

2. The combination, in a propellerwheel. of a drive-shaft suitablyjournaled, a wheel provided with parallel rim-sections, and having its spokes slotted as described, a series of paddles having journals bearing in said rimscctions, a block located in the slot of each of the spokes and connected to one ofthejournals of each of the paddles, a roller carried by said block and adapted to travel in eccentric guidepassages formed in the adjacent side of the vessel, and weighted dogs having spurs at closing the upper ends of one set of passages and the lower ends of another set, substantially as set forth.

3. In a feathering paddle-wheel, the pivoted paddle-blades 0, formed of a single piece of metal, and hollowed so as to be concave both longitudinally and laterally, and provided on the rear with raised portions 0, from which project the sidejournals, substantially as shown.

4. In a self-feathering paddle-wheel, the

guide-recesses K K L L, provided with I weighted dogs M, pivoted as shown, and an anti-friction roller adapted to travel therein, and connected to the paddles so that theywill operate so as to present their concave surface to the water when the wheel is rotated in either direction, substantially as shown.

In testimony whereof I aiiix my signature in presence of two witnesses.

PARKER C. MARSH.

\Vitnesses:

Gvnns B. Swan, J OSEPH 

